1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
| ; ModuleID = 'source.c'
source_filename = "source.c"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"
@key = dso_local global [33 x i8] c"7 >)\04\09\00\102\1A}5 q\130L75\19\1Cu|* 5>v\15v/2\02", align 16
@.str = private unnamed_addr constant [18 x i8] c"Usage: %s <flag>\0A\00", align 1
@.str.1 = private unnamed_addr constant [31 x i8] c"[-] Bad password... Try again.\00", align 1
@.str.2 = private unnamed_addr constant [46 x i8] c"[+] Well done ! You can validate with flag :)\00", align 1
; Function Attrs: noinline nounwind optnone uwtable
define dso_local i32 @check_password(i8* %0) #0 {
%2 = alloca i32, align 4
%3 = alloca i8*, align 8
%4 = alloca i32, align 4
store i8* %0, i8** %3, align 8
%5 = load i8*, i8** %3, align 8
%6 = call i64 @strlen(i8* %5) #3
%7 = icmp ne i64 %6, 33
br i1 %7, label %8, label %9
8: ; preds = %1
store i32 -1, i32* %2, align 4
br label %40
9: ; preds = %1
store i32 0, i32* %4, align 4
br label %10
10: ; preds = %36, %9
%11 = load i32, i32* %4, align 4
%12 = icmp slt i32 %11, 33
br i1 %12, label %13, label %39
13: ; preds = %10
%14 = load i32, i32* %4, align 4
%15 = srem i32 %14, 4
%16 = add nsw i32 4194304, %15
%17 = sext i32 %16 to i64
%18 = inttoptr i64 %17 to i8*
%19 = load i8, i8* %18, align 1
%20 = zext i8 %19 to i32
%21 = load i8*, i8** %3, align 8
%22 = load i32, i32* %4, align 4
%23 = sext i32 %22 to i64
%24 = getelementptr inbounds i8, i8* %21, i64 %23
%25 = load i8, i8* %24, align 1
%26 = sext i8 %25 to i32
%27 = xor i32 %20, %26
%28 = load i32, i32* %4, align 4
%29 = sext i32 %28 to i64
%30 = getelementptr inbounds [33 x i8], [33 x i8]* @key, i64 0, i64 %29
%31 = load i8, i8* %30, align 1
%32 = zext i8 %31 to i32
%33 = icmp ne i32 %27, %32
br i1 %33, label %34, label %35
34: ; preds = %13
store i32 1, i32* %2, align 4
br label %40
35: ; preds = %13
br label %36
36: ; preds = %35
%37 = load i32, i32* %4, align 4
%38 = add nsw i32 %37, 1
store i32 %38, i32* %4, align 4
br label %10, !llvm.loop !4
39: ; preds = %10
store i32 0, i32* %2, align 4
br label %40
40: ; preds = %39, %34, %8
%41 = load i32, i32* %2, align 4
ret i32 %41
}
; Function Attrs: nounwind readonly willreturn
declare dso_local i64 @strlen(i8*) #1
; Function Attrs: noinline nounwind optnone uwtable
define dso_local i32 @main(i32 %0, i8** %1) #0 {
%3 = alloca i32, align 4
%4 = alloca i32, align 4
%5 = alloca i8**, align 8
store i32 0, i32* %3, align 4
store i32 %0, i32* %4, align 4
store i8** %1, i8*** %5, align 8
%6 = load i32, i32* %4, align 4
%7 = icmp ne i32 %6, 2
br i1 %7, label %8, label %13
8: ; preds = %2
%9 = load i8**, i8*** %5, align 8
%10 = getelementptr inbounds i8*, i8** %9, i64 0
%11 = load i8*, i8** %10, align 8
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i8* %11)
store i32 1, i32* %3, align 4
br label %24
13: ; preds = %2
%14 = load i8**, i8*** %5, align 8
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15, align 8
%17 = call i32 @check_password(i8* %16)
%18 = icmp ne i32 %17, 0
br i1 %18, label %19, label %21
19: ; preds = %13
%20 = call i32 @puts(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.1, i64 0, i64 0))
br label %23
21: ; preds = %13
%22 = call i32 @puts(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.2, i64 0, i64 0))
br label %23
23: ; preds = %21, %19
store i32 0, i32* %3, align 4
br label %24
24: ; preds = %23, %8
%25 = load i32, i32* %3, align 4
ret i32 %25
}
declare dso_local i32 @printf(i8*, ...) #2
declare dso_local i32 @puts(i8*) #2
attributes #0 = { noinline nounwind optnone uwtable "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nounwind readonly willreturn "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind readonly willreturn }
!llvm.module.flags = !{!0, !1, !2}
!llvm.ident = !{!3}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 7, !"uwtable", i32 1}
!2 = !{i32 7, !"frame-pointer", i32 2}
!3 = !{!"Ubuntu clang version 13.0.0-2"}
!4 = distinct !{!4, !5}
!5 = !{!"llvm.loop.mustprogress"}
|
